Processing method and device based on vehicle braking balance temperature

Abstract

The embodiment of the invention provides a processing method and device based on vehicle braking balance temperature, and the method comprises the steps: obtaining control parameters collected in the process of controlling a vehicle to execute a preset driving task, and controlling the vehicle to execute the preset driving task for multiple times according to the control parameters, the method comprises the steps that a vehicle is controlled to execute a preset driving task, braking temperature data collected in the process of executing the preset driving task for multiple times are obtained, the braking balance temperature of the vehicle is determined according to the braking temperature data, and the braking balance temperature is the temperature value when a braking system in the vehicle reaches a temperature stable state, so that the purpose of controlling the vehicle to execute the preset driving task is achieved. According to the method, the brake balance temperature is obtained, so that the temperature rising difference value of the brake can be obtained according to the brake temperature data, whether abnormal wear exists in the using process of the vehicle or not is judged, the safety and reliability of a vehicle brake system are improved, and the service life of the vehicle brake system is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle testing, and in particular to a processing method and device based on vehicle brake balance temperature. Background Art

[0002] The braking system in a vehicle is a key part of the vehicle's safety performance. Its working principle is to start the energy supply device through pedal action, convert energy into hydraulic or pneumatic energy, and then transmit the pressure to each brake through the transmission device, so that the brake contacts the wheel and generates friction, thereby achieving the purpose of deceleration or stopping.

[0003] During vehicle braking, the brake shoes and brake discs in the braking system will generate friction with each other, and friction will generate a lot of heat. In order to ensure safety and stability, the heat generated needs to maintain a certain balance, which means that the brakes of all wheels must work in a similar way and time to avoid wheel locking and vehicle loss of control.

[0004] However, at present, most models on the market do not pay attention to the real-time temperature changes in the vehicle's braking system after the heat is generated by the vehicle's braking friction, thus ignoring the potential safety hazards that may be caused by abnormal temperature changes in the vehicle's braking system. Summary of the invention

[0005] In view of the above problems, a method and device based on vehicle brake balance temperature is proposed to overcome the above problems or at least partially solve the above problems, including:

[0006] A processing method based on vehicle brake balance temperature, characterized in that the method comprises:

[0007] Acquire control parameters collected during the process of controlling the vehicle to perform a preset driving task;

[0008] According to the control parameters, controlling the vehicle to perform the preset driving task multiple times, and acquiring brake temperature data collected during the multiple executions of the preset driving task;

[0009] The brake balance temperature of the vehicle is determined according to the brake temperature data; wherein the brake balance temperature is a temperature value at which the brake system in the vehicle reaches a temperature stable state.

[0010] Optionally, the acquiring of control parameters collected during the process of controlling the vehicle to perform a preset driving task includes:

[0011] After the vehicle is accelerated to a first target speed, the vehicle is controlled to travel according to the preset driving task, and control parameters corresponding to deceleration, acceleration and constant speed driving of the vehicle are collected.

[0012] Optionally, the control parameters include a target braking operating force, a target acceleration control curve, and a target throttle operating force. The vehicle is controlled to travel according to the preset driving task, and the control parameters corresponding to deceleration, acceleration, and constant speed driving of the vehicle are collected during the driving process, including:

[0013] decelerating by using a target deceleration to obtain a target braking operation force; wherein the target braking operation force is a brake pedal force corresponding to the target deceleration;

[0014] After the vehicle decelerates to the second target vehicle speed, the vehicle is controlled to accelerate to the first target vehicle speed according to the target acceleration to obtain a target acceleration control curve; wherein the target acceleration control curve is a curve corresponding to the change of the accelerator pedal force and the vehicle speed during the acceleration process;

[0015] After the vehicle is accelerated to the first target vehicle speed, the vehicle is controlled to maintain a constant speed to obtain a target throttle operating force; wherein the target throttle operating force is the throttle pedal force corresponding to the constant speed driving.

[0016] Optionally, according to the control parameter, controlling the vehicle to perform the preset driving task each time, and acquiring the brake temperature data collected during the execution of the preset driving task each time, includes:

[0017] controlling the target vehicle to decelerate by using the target braking operation force, so that the vehicle decelerates to a second target vehicle speed when traveling at a constant speed of the first target vehicle speed, and collecting brake temperature data of a brake system in the vehicle;

[0018] Controlling the target vehicle to accelerate by using the target acceleration control curve, so that the target vehicle accelerates to a first target vehicle speed;

[0019] The target throttle operation force enables the target vehicle to maintain a constant speed according to the first target vehicle speed within a preset time period.

[0020] Optionally, determining the brake balance temperature of the vehicle according to the brake temperature data includes:

[0021] According to the brake temperature data, a plurality of maximum temperature values ​​of the brake system in the vehicle during a plurality of the preset driving tasks are obtained;

[0022] A temperature average is calculated according to the plurality of highest temperature values, and the temperature average is determined as a brake balance temperature of the vehicle.

[0023] Optionally, an external control device and an external measurement device are installed on the vehicle, and before acquiring the control parameters collected during the process of controlling the vehicle to perform a preset driving task, the method further includes:

[0024] The external control device and the external measuring device are debugged; wherein the external control device is used to control the vehicle to travel, and the external measuring device includes a device for measuring the brake temperature data of the brake system.

[0025] Optionally, after debugging the external control device and the external measurement device, the method further includes:

[0026] confirming an initial temperature of a brake system in the vehicle before driving;

[0027] When the initial temperature exceeds a temperature threshold, the braking system in the vehicle is cooled.

[0028] Optionally, it also includes:

[0029] It is determined whether the brake system in the vehicle has abnormal wear according to the brake balance temperature.

[0030] A processing device based on vehicle brake balance temperature, the device comprising:

[0031] A control parameter acquisition module is used to acquire control parameters collected during the process of controlling the vehicle to perform a preset driving task;

[0032] A driving task execution module, used to control the vehicle to execute the preset driving task multiple times according to the control parameters, and obtain the brake temperature data collected during the multiple executions of the preset driving task;

[0033] The brake balance temperature acquisition module is used to determine the brake balance temperature of the vehicle according to the brake temperature data; wherein the brake balance temperature is the temperature value at which the brake system in the vehicle reaches a temperature stable state.

[0034] An electronic device comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein the computer program implements the above-mentioned processing method based on vehicle brake balance temperature when executed by the processor.

[0035] A readable storage medium stores a computer program, and when the computer program is executed by a processor, the processing method based on the vehicle brake balance temperature as described above is implemented.

[0036] The embodiments of the present invention have the following advantages:

[0037] In an embodiment of the present invention, by acquiring control parameters collected during the process of controlling a vehicle to perform a preset driving task, the vehicle is controlled to perform the preset driving task multiple times according to the control parameters, and brake temperature data collected during the multiple executions of the preset driving task are acquired, and the brake balance temperature of the vehicle is determined based on the brake temperature data, the brake balance temperature being a temperature value at which the brake system in the vehicle reaches a temperature stable state, thereby achieving the brake balance temperature by controlling the vehicle to perform the preset driving task, thereby testing whether the temperatures of various brakes of the brake system are consistent after braking under single or repeated working conditions, and obtaining the brake temperature rise difference value based on the brake temperature data, thereby judging whether the vehicle has abnormal wear during use, thereby improving the safety, reliability and service life of the vehicle's brake system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0039] Figure 1 is a flowchart of a processing method based on vehicle brake balance temperature provided by some embodiments of the present invention;

[0040] Figure 2 is a flow chart of steps of a method for testing vehicle brake balance temperature provided by some embodiments of the present invention;

[0041] Figure 3 It is a structural block diagram of a processing device based on vehicle brake balance temperature provided by some embodiments of the present invention. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The brake balance temperature is taken into consideration in the design of modern vehicle braking systems. According to the type of vehicle and usage scenario, appropriate brake materials and structures are selected to reduce the temperature difference during braking.

[0044] Brake balance temperature refers to the temperature value when the temperature of each part of the brake system (mainly including brake discs, brake shoes, and brake fluid) reaches a stable state during the continuous braking process of the vehicle. This temperature value is an important indicator to measure the working state and performance of the brake system. When the brake balance temperature is too high, it may indicate that the heat dissipation performance of the brake system is poor, or the brake shoes are severely worn, and timely inspection and maintenance are required. At the same time, the temperature of each wheel brake system should be maintained at a comparable level, that is, the difference value should not exceed a limited value. Brake balance temperature is one of the important indicators for evaluating the performance and balance of the vehicle's brake system.

[0045] At present, when testing the braking performance of automobiles, more testing directions tend to be the vehicle's extreme braking distance, the feeling of the vehicle giving the driver's footsteps when braking, the emergency braking ability when the braking system fails, and the impact of the heat generated by braking friction on the braking performance under certain conditions. In addition, most models on the market are not equipped with a real-time temperature monitoring system for the vehicle braking system, so they cannot pay attention to the real-time temperature changes generated by the vehicle braking system.

[0046] In some embodiments of the present invention, the braking system in the vehicle can be tested to obtain measured temperature data of various parts of the braking system in the vehicle, and the brake balance temperature of each part of the braking system in the vehicle can be obtained based on the temperature data to observe the real-time temperature changes of each part of the braking system in the vehicle.

[0047] Reference Figure 1 , shows a flowchart of a processing method based on vehicle brake balance temperature provided by some embodiments of the present invention, which may specifically include the following steps:

[0048] Step 101, obtaining control parameters collected during the process of controlling the vehicle to perform a preset driving task.

[0049] To test the braking system in the vehicle, this test requires obtaining the temperature data of the braking system in the vehicle, and the temperature data of the braking system needs to be collected during the braking process of the vehicle while driving. Therefore, a preset driving task can be established first, and the vehicle can be controlled to perform the preset driving task to obtain the temperature data of the braking system. However, in order to control the vehicle to perform the preset driving task, the vehicle can be controlled to drive once according to the requirements of the preset driving task to obtain the control parameters required to control the vehicle to perform the preset driving task.

[0050] In one example, in order to control the vehicle to perform a preset driving task to complete the test and make the test result more accurate, it is necessary to meet certain test conditions before the test is performed. The vehicle can be a passenger vehicle with a driving range of 3,000 to 10,000 kilometers. The test conditions may include the following parts:

[0051] 1. Environmental conditions: The test can be carried out in weather with good visibility, such as no rain, fog or snow. The ambient temperature needs to be between 0℃ and 40℃, and the average wind speed needs to be no more than 5m / s.

[0052] 2. Road conditions: The road conditions can be a high-speed ring road or a straight road that is long enough and flat.

[0053] 3. Vehicle requirements: The test mass can be loaded to the maximum design mass, i.e. fully loaded, and the load can be evenly distributed in the seats and trunk, and the axle load is tested and recorded. The tire pressure can be the pressure value specified by the manufacturer ±10kPa.

[0054] 4. The equipment used for testing requires that the accuracy of the speedometer in the range of (0~150)km / h shall not be less than 1% of the maximum range, and the accuracy of the accelerometer in the range of (-12~12)m / s 2 The accuracy within the range is not less than 1% of the maximum range, the accuracy of the thermometer or thermocouple within the range of (0-400)℃ is within ±2℃, and the accuracy of the pedal-controlled robot within the range of (0-1000)N is within ±1N.

[0055] Among them, the pedal robot can be an external test device, which can be divided into an accelerator pedal robot and a brake pedal robot, which are used to apply the required force to the accelerator pedal or the brake pedal to complete the control of the vehicle pedal.

[0056] 5. Vehicle running-in requirements: The brake system in the vehicle needs to be run-in. You can choose one of the following methods to run-in:

[0057] 1) In accordance with the requirements of national standard GB 21670;

[0058] 2) According to the manufacturer's (vehicle manual) regulations;

[0059] 3) Run-in 80 times at a speed of 80 km / h to 30 km / h and a deceleration of 0.3g. During the running-in process, the maximum temperature of the front wheel during each braking does not exceed 100°C;

[0060] 4) Brake 15 times continuously from 100km / h to 0km / h with full force (brake pedal force > 700N).

[0061] In some embodiments of the present invention, an external control device and an external measurement device are installed on the vehicle, and before obtaining the control parameters collected during the process of controlling the vehicle to perform the preset driving task, the method further includes:

[0062] The external control device and the external measuring device are debugged; wherein the external control device is used to control the vehicle to travel, and the external measuring device includes a device for measuring the brake temperature data of each part of the brake system.

[0063] In practical applications, if the aforementioned test conditions are met, a data acquisition instrument, a speedometer, a deceleration meter, a pedal control robot, etc. can be installed on the vehicle for testing according to the equipment installation specifications, and a thermocouple can be installed on the brake of each wheel in the vehicle braking system to accurately measure the temperature of the braking system in the vehicle. The brake includes a brake disc, a brake shoe, a brake fluid, etc. The brake component on which the thermocouple is installed can be the brake disc, the brake fluid, or both, which is not limited here.

[0064] It should be supplemented that the average value of the brake temperature data measured on each component of a single wheel brake or the brake temperature data of a single component may be used as the brake temperature data of the wheel brake.

[0065] It should be noted that the external control device may be a pedal control robot, which includes an accelerator pedal control robot and a brake pedal control robot, and is used to control the vehicle to travel. The external measurement device may include a thermocouple, a device for measuring the brake temperature data of the brake system, and may also include a data acquisition instrument, a speedometer, and a deceleration meter.

[0066] Before the test officially begins, that is, before obtaining the control parameters collected in the process of controlling the vehicle to perform the preset driving task, the external control equipment and the external measuring equipment can be debugged, that is, the data acquisition instrument, speedometer, accelerometer, pedal control robot and thermocouple can be debugged to make the external control equipment and the external measuring equipment work normally. Then, the vehicle used for the test is driven to the starting point of the road that meets the above test conditions. At the same time, the accurate temperature and wind speed of the current environment can also be recorded for comprehensive analysis of the braking system in the vehicle after the test is completed.

[0067] In some embodiments of the present invention, after debugging the external control device and the external measurement device, the method further includes:

[0068] confirming an initial temperature of a brake system in the vehicle before driving;

[0069] When the initial temperature exceeds a temperature threshold, the braking system in the vehicle is cooled.

[0070] After debugging the external control device and the external measuring device, that is, after the debugging of the equipment used for testing is completed, confirm the initial temperature of the braking system in the vehicle before driving. If the initial temperature exceeds the temperature threshold, cool the braking system in the vehicle to ensure the accuracy of the final test results.

[0071] As an example, the temperature threshold may be 65°C, and the initial temperature should not exceed 65°C, otherwise the brake system should be cooled to below 65°C, that is, the initial temperature of each wheel brake disc and brake shoe in the vehicle brake system should not exceed 65°C, otherwise it should be cooled to below 65°C. The cooling method may be natural cooling, water spray cooling, or the vehicle used for testing may be equipped with a brake cooling system, and cooling may also be performed through the brake cooling system, which is not limited here.

[0072] In some embodiments of the present invention, the acquiring of control parameters collected during the process of controlling the vehicle to perform a preset driving task includes:

[0073] After the vehicle is accelerated to a first target speed, the vehicle is controlled to travel according to the preset driving task, and control parameters corresponding to deceleration, acceleration and constant speed driving of the vehicle are collected.

[0074] Specifically, the preset driving task is to test the braking system in the vehicle, that is, the preset driving task must include a deceleration process, and may also include an acceleration and a constant speed driving process. On this basis, the vehicle can be controlled first to accelerate the vehicle to a first target speed, and then the vehicle can be controlled to drive according to the preset driving task, and the control parameters corresponding to the pedal control robot when the vehicle decelerates, accelerates, and drives at a constant speed during the execution of the preset driving task are collected.

[0075] In some embodiments of the present invention, the control parameters include a target braking operating force, a target acceleration control curve, and a target throttle operating force. The control vehicle is controlled to travel according to the preset driving task, and the control parameters corresponding to deceleration, acceleration, and constant speed driving of the vehicle are collected during the driving process, including:

[0076] Sub-step 11, decelerating by using a target deceleration to obtain a target braking operation force; wherein the target braking operation force is a brake pedal force corresponding to the target deceleration.

[0077] After the vehicle accelerates to the first target speed, the brake pedal robot can be controlled to step on the brake pedal to try to find the brake pedal force corresponding to the target deceleration of the vehicle in the preset driving task, so as to obtain the brake pedal force, which is the target braking operating force.

[0078] In one example, the brake pedal control robot can be controlled to step on the brake pedal to try to find the brake pedal force corresponding to the target deceleration of the vehicle at 0.3g, and the brake pedal force is set as the target braking operation force of the brake pedal control robot. It should be noted that the target deceleration can be 0.3g, or any other deceleration value that can be achieved by any vehicle, or it can be performed by full braking or by limiting the pedal force or pedal travel.

[0079] Sub-step 12, after the vehicle decelerates to the second target speed, controlling the vehicle to accelerate to the first target speed according to the target acceleration to obtain a target acceleration control curve; wherein the target acceleration control curve is a change curve corresponding to the accelerator pedal force and the vehicle speed during the acceleration process.

[0080] After the vehicle decelerates from the first target speed to the second target speed, the pedal force of the brake pedal robot can be set to 0N. At the same time, the vehicle can be controlled by controlling the accelerator pedal robot so that the vehicle can generate the target acceleration in the preset driving task until it accelerates to the first target speed. The change curve of the accelerator pedal force of the accelerator pedal control robot during this acceleration process can be set as the target acceleration control curve, which is the change curve of the accelerator pedal force of the accelerator pedal control robot and the vehicle speed during the acceleration process.

[0081] In one example, after the vehicle decelerates from the first target speed to the second target speed, the brake pedal robot operating force can be set to 0N, and the accelerator pedal control robot can be controlled to operate the accelerator pedal so that the vehicle can generate a target acceleration of 0.5g until it accelerates to the first target speed. The accelerator pedal force change curve of the accelerator pedal control robot during this acceleration process can be set as the target acceleration control curve. It should be noted that the target acceleration value can be 0.5g, or any other acceleration value that can be achieved by any vehicle.

[0082] Sub-step 13, after the vehicle is accelerated to the first target vehicle speed, controlling the vehicle to maintain a constant speed to obtain a target throttle operating force; wherein the target throttle operating force is the throttle pedal force corresponding to the constant speed driving.

[0083] After the vehicle is accelerated from the second target speed to the first target speed, the accelerator pedal can be controlled by the robot to operate the accelerator pedal to control the vehicle to travel at a constant speed. The accelerator pedal force at this time can be the target accelerator operating force of the pedal control robot.

[0084] Step 102: Control the vehicle to perform the preset driving task multiple times according to the control parameters, and obtain brake temperature data collected during the multiple executions of the preset driving task.

[0085] After obtaining the corresponding control parameters of the pedal control robot, the vehicle is at the first target speed. The pedal control robot can be controlled to control the vehicle for test to repeatedly perform the preset driving task, that is, perform the preset driving task multiple times to obtain the brake temperature data collected during the multiple executions of the preset driving tasks.

[0086] In some embodiments of the present invention, according to the control parameters, controlling the vehicle to perform the preset driving task each time, and obtaining the brake temperature data collected during the execution of the preset driving task each time, includes:

[0087] Sub-step 21, controlling the target vehicle to decelerate by using the target braking operation force, so that the vehicle decelerates to a second target vehicle speed while traveling at a constant speed at the first target vehicle speed, and collecting brake temperature data of the brake system in the vehicle.

[0088] When starting to execute the preset driving task, the tested vehicle is at the first target speed. The brake pedal can be controlled to control the robot to apply a brake pedal force of the target braking operating force to decelerate the vehicle to the second target speed, and the brake temperature data of the vehicle's braking system during the braking process can be collected.

[0089] Sub-step 22, controlling the target vehicle to accelerate by using the target acceleration control curve, so that the target vehicle accelerates to a first target vehicle speed.

[0090] After the vehicle decelerates to the second target speed, the brake temperature data for the preset driving task is also collected. The accelerator pedal can be controlled to control the robot to apply an accelerator pedal force that changes according to the target acceleration control curve to accelerate the vehicle to the first target speed.

[0091] Sub-step 23, using the target throttle operating force to enable the target vehicle to maintain a constant speed at the first target vehicle speed within a preset time period.

[0092] After the vehicle reaches the first target speed, the accelerator pedal control robot can be controlled to apply the target accelerator operating force to keep the vehicle moving at a constant speed within a preset time period, so that the vehicle speed is the first target speed when the preset driving task is performed next time. After accelerating to the first target speed, the vehicle is driven at a constant speed for a preset time period, which can effectively reduce the temperature of the braking system in the vehicle.

[0093] In one example, the preset time period may be 10 seconds or any other time, and the first target vehicle speed and the second target speed may be any vehicle speed as long as the first target vehicle speed is greater than the second target speed.

[0094] As an example, during the process of the vehicle repeatedly performing the preset driving task, that is, during the process of performing the preset driving task multiple times, the temperature of the brake disc, brake shoe, and brake fluid of each wheel in the vehicle's braking system can be observed. When one of the following conditions is met, it is considered that the brake temperature has reached a balanced state, and the test of the vehicle's braking system is terminated:

[0095] 1) When the maximum temperature of each measuring point after 10 consecutive executions of the preset driving task does not change by more than ±5°C and there is no obvious upward trend;

[0096] 2) When the maximum temperature of each measuring point after repeatedly executing the preset driving task for 4 minutes does not change by more than ±5°C and there is no obvious upward trend;

[0097] 3) A total of 80 preset driving tasks were executed. It should be noted that the 80 preset driving tasks may also be other times according to the different brake thermal decay performance of vehicles from different manufacturers.

[0098] Step 103, determining the brake balance temperature of the vehicle according to the brake temperature data; wherein the brake balance temperature is a temperature value at which the brake system in the vehicle reaches a temperature stable state.

[0099] After the vehicle performs the preset driving task multiple times, the brake temperature data of the braking system in the vehicle collected each time the preset driving task is performed is obtained, and then the temperature value when the temperature of each part of the braking system in the vehicle (mainly including the brake disc, brake shoe, and brake fluid corresponding to each wheel brake) reaches a stable state can be determined based on the brake temperature data, that is, the brake balance temperature of each part of the braking system in the vehicle.

[0100] In some embodiments of the present invention, determining the brake balance temperature of the vehicle according to the brake temperature data includes:

[0101] Sub-step 31, obtaining multiple maximum temperature values ​​of the braking system in the vehicle during multiple preset driving tasks according to the braking temperature data;

[0102] After the vehicle performs the preset driving task multiple times, the brake temperature data of the braking system in the vehicle collected during each execution of the preset driving task is obtained. Therefore, the brake temperature data may include multiple maximum temperature values ​​of various parts of the braking system in the vehicle during the multiple preset driving tasks, and the multiple maximum temperature values ​​can be obtained.

[0103] Sub-step 32, calculating a temperature average value according to the multiple highest temperature values, and determining the temperature average value as the brake balance temperature of the vehicle.

[0104] After obtaining the multiple maximum temperature values, the temperature average value corresponding to each part of the braking system in the vehicle can be calculated based on the multiple maximum temperature values ​​corresponding to each part of the braking system in the vehicle, and the temperature average value corresponding to each part of the braking system in the vehicle can be determined as the braking balance temperature of each part of the braking system in the vehicle.

[0105] In one example, the vehicle brake balance temperature value can be calculated as follows:

[0106] 1) The average value of the highest temperature of each part of the braking system in the vehicle after the last 10 consecutive executions of the preset driving tasks;

[0107] 2) The average value of the highest temperature of each part of the braking system of the vehicle after the preset driving task is performed within the last 4 consecutive minutes;

[0108] 3) The average value of the maximum temperature of each part of the braking system in the vehicle after the preset driving task is performed for 71 to 80 times.

[0109] In some embodiments of the present invention, it further includes:

[0110] It is determined whether the brake system in the vehicle has abnormal wear according to the brake balance temperature.

[0111] After obtaining the average temperature of each part of the braking system in the vehicle, that is, the brake balance temperature, the average value of the brake balance temperature of each component of a single wheel brake or the brake balance temperature of a single component can be used as the brake balance temperature of the wheel brake. Therefore, it is possible to judge whether the vehicle will have abnormal brake wear during use based on the difference in the temperature rise of the brake balance temperature of all wheels corresponding to the brakes in the braking system of the vehicle. For example, if the brake balance temperature rise of a single wheel brake is higher than that of other wheel brakes, then it is believed that the braking force of the wheel brake will be large. Friction generates heat, and the higher the temperature, the greater the friction. The greater the friction, the greater the braking force at that location. If this continues for a long time, the wear at that location will be higher than that of other locations.

[0112] In one embodiment, if the brake balance temperature of a single wheel brake is higher than that of other wheel brakes and the difference exceeds a preset threshold, it is considered that the single brake may be abnormally worn, and the driver may be prompted to inspect and repair it.

[0113] In an embodiment of the present invention, by acquiring control parameters collected during the process of controlling a vehicle to perform a preset driving task, the vehicle is controlled to perform the preset driving task multiple times according to the control parameters, and brake temperature data collected during the multiple executions of the preset driving task are acquired, and the brake balance temperature of the vehicle is determined based on the brake temperature data, the brake balance temperature being a temperature value at which the brake system in the vehicle reaches a temperature stable state, thereby achieving the brake balance temperature by controlling the vehicle to perform the preset driving task, thereby testing whether the temperatures of various brakes of the brake system are consistent after braking under single or repeated working conditions, and obtaining the brake temperature rise difference value based on the brake temperature data, thereby judging whether the vehicle has abnormal wear during use, thereby improving the safety, reliability and service life of the vehicle's brake system.

[0114] Reference Figure 2 , shows a flow chart of the steps of a method for testing the vehicle brake balance temperature provided by some embodiments of the present invention, in order to enable those skilled in the art to better understand the above steps, the following is combined with the attached Figure 2 The embodiments of the present invention are described exemplarily, but it should be understood that the embodiments of the present invention are not limited thereto, and may specifically include the following steps:

[0115] 1. Before starting the test, you can record the exact temperature and wind speed of the environment;

[0116] 2. Confirm the initial temperature of the vehicle's brake system. The brake system includes brake discs and brake shoes. If the initial temperature is too high, such as higher than the temperature threshold, cooling is required;

[0117] 3. Officially start testing the braking system in the vehicle. First, find the brake pedal force F1 (i.e., target braking operating force) that produces the target deceleration;

[0118] 4. Secondly, find the accelerator pedal force curve S (i.e. target acceleration control curve) that produces the target acceleration.

[0119] 5. Then, find the accelerator pedal force F2 (i.e., the target accelerator operating force) corresponding to the uniform speed driving;

[0120] 6. Start the brake balance temperature test, that is, repeat the preset driving task.

[0121] 7. Calculate the brake balance temperature based on the brake temperature data obtained by repeatedly executing the preset driving task.

[0122] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0123] Reference Figure 3 , shows a schematic diagram of the structure of a processing device based on vehicle brake balance temperature provided by some embodiments of the present invention, which may specifically include the following modules:

[0124] A control parameter acquisition module 301 is used to acquire control parameters collected during the process of controlling the vehicle to perform a preset driving task;

[0125] A driving task execution module 302, configured to control the vehicle to execute the preset driving task multiple times according to the control parameters, and obtain brake temperature data collected during the multiple executions of the preset driving task;

[0126] The brake balance temperature acquisition module 303 is used to determine the brake balance temperature of the vehicle according to the brake temperature data; wherein the brake balance temperature is the temperature value at which the brake system in the vehicle reaches a temperature stable state.

[0127] In one embodiment of the present invention, the control parameter acquisition module 301 includes:

[0128] The control parameter acquisition submodule is used to control the vehicle to travel according to the preset driving task after accelerating the vehicle to the first target speed, and to collect control parameters corresponding to the vehicle when decelerating, accelerating and traveling at a constant speed.

[0129] In one embodiment of the present invention, the control parameters include a target braking operation force, a target acceleration control curve, and a target throttle operation force, and the control parameter acquisition submodule includes:

[0130] A braking operation force acquisition unit, used to decelerate using a target deceleration to acquire a target braking operation force; wherein the target braking operation force is a brake pedal force corresponding to the target deceleration;

[0131] a control curve acquisition unit, configured to control the vehicle to accelerate to the first target speed according to a target acceleration after the vehicle decelerates to a second target speed, so as to acquire a target acceleration control curve; wherein the target acceleration control curve is a curve of changes in the accelerator pedal force and the vehicle speed during acceleration;

[0132] The throttle operating force acquisition unit is used to control the vehicle to maintain a constant speed after the vehicle is accelerated to a first target vehicle speed, so as to acquire a target throttle operating force; wherein the target throttle operating force is the throttle pedal force corresponding to the constant speed driving.

[0133] In one embodiment of the present invention, the driving task execution module 302 includes:

[0134] a temperature data collection submodule, configured to control the target vehicle to decelerate by using the target braking operation force, so that the vehicle decelerates to a second target vehicle speed when traveling at a constant speed of the first target vehicle speed, and collect brake temperature data of a brake system in the vehicle;

[0135] an acceleration submodule, configured to control the target vehicle to accelerate according to the target acceleration control curve, so that the target vehicle accelerates to a first target vehicle speed;

[0136] The uniform speed driving submodule is used to enable the target vehicle to maintain a uniform speed according to the first target vehicle speed within a preset time period through the target throttle operation force.

[0137] In one embodiment of the present invention, the brake balance temperature acquisition module 303 includes:

[0138] A maximum temperature value acquisition submodule, used for acquiring a plurality of maximum temperature values ​​of the braking system in the vehicle during a plurality of the preset driving tasks according to the braking temperature data;

[0139] The brake balance temperature acquisition submodule is used to calculate a temperature average value according to the multiple highest temperature values, and determine the temperature average value as the brake balance temperature of the vehicle.

[0140] In one embodiment of the present invention, the vehicle is equipped with an external control device and an external measurement device, and before acquiring the control parameters collected during the process of controlling the vehicle to perform the preset driving task, the method further includes:

[0141] The debugging module is used to debug the external control device and the external measuring device; wherein the external control device is used to control the vehicle to travel, and the external measuring device includes a device for measuring the brake temperature data of the brake system.

[0142] In one embodiment of the present invention, after debugging the external control device and the external measurement device, the method further includes:

[0143] An initial temperature module, used to confirm the initial temperature of the braking system in the vehicle before driving;

[0144] The initial temperature verification module is used to cool the braking system in the vehicle when the initial temperature exceeds a temperature threshold.

[0145] In one embodiment of the present invention, it also includes:

[0146] The abnormality judgment module is used to judge whether the braking system in the vehicle has abnormal wear according to the brake balance temperature.

[0147] In an embodiment of the present invention, by acquiring control parameters collected during the process of controlling a vehicle to perform a preset driving task, the vehicle is controlled to perform the preset driving task multiple times according to the control parameters, and brake temperature data collected during the multiple executions of the preset driving task are acquired, and the brake balance temperature of the vehicle is determined based on the brake temperature data, the brake balance temperature being a temperature value at which the brake system in the vehicle reaches a temperature stable state, thereby achieving the brake balance temperature by controlling the vehicle to perform the preset driving task, thereby testing whether the temperatures of various brakes of the brake system are consistent after braking under single or repeated working conditions, and obtaining the brake temperature rise difference value based on the brake temperature data, thereby judging whether the vehicle has abnormal wear during use, thereby improving the safety, reliability and service life of the vehicle's brake system.

[0148] Some embodiments of the present invention further provide an electronic device, comprising a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the above method is implemented when the computer program is executed by the processor.

[0149] Some embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, and the computer program implements the above method when executed by a processor.

[0150] Some embodiments of the present invention further provide a computer program product, including a computer program, which implements the above method when executed by a processor.

[0151] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0152] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0153] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0154] Those skilled in the art will appreciate that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0155] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0156] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0157] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0158] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0159] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the above elements.

[0160] The above provides a detailed introduction to a processing method and device based on vehicle brake balance temperature. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A processing method based on vehicle brake balance temperature, characterized in that: The method comprises: Acquire control parameters collected during the process of controlling the vehicle to perform a preset driving task; According to the control parameters, controlling the vehicle to perform the preset driving task multiple times, and acquiring brake temperature data collected during the multiple executions of the preset driving task; The brake balance temperature of the vehicle is determined according to the brake temperature data; wherein the brake balance temperature is a temperature value at which the brake system in the vehicle reaches a temperature stable state.

2. The method according to claim 1, characterized in that The obtaining of control parameters collected during the process of controlling the vehicle to perform a preset driving task includes: After the vehicle is accelerated to a first target speed, the vehicle is controlled to travel according to the preset driving task, and control parameters corresponding to deceleration, acceleration and constant speed driving of the vehicle are collected.

3. The method according to claim 2, characterized in that The control parameters include a target braking force, a target acceleration control curve, and a target throttle force. The vehicle is controlled to travel according to the preset driving task, and the control parameters corresponding to deceleration, acceleration, and constant speed driving of the vehicle are collected during the driving process, including: decelerating by using a target deceleration to obtain a target braking operation force; wherein the target braking operation force is a brake pedal force corresponding to the target deceleration; After the vehicle decelerates to the second target vehicle speed, the vehicle is controlled to accelerate to the first target vehicle speed according to the target acceleration to obtain a target acceleration control curve; wherein the target acceleration control curve is a curve corresponding to the change of the accelerator pedal force and the vehicle speed during the acceleration process; After the vehicle is accelerated to the first target vehicle speed, the vehicle is controlled to maintain a constant speed to obtain a target throttle operating force; wherein the target throttle operating force is the throttle pedal force corresponding to the constant speed driving.

4. The method according to claim 3, characterized in that According to the control parameters, the vehicle is controlled to perform the preset driving task each time, and the brake temperature data collected during the execution of the preset driving task each time is obtained, including: controlling the target vehicle to decelerate by using the target braking operation force, so that the vehicle decelerates to a second target vehicle speed when traveling at a constant speed of the first target vehicle speed, and collecting brake temperature data of a brake system in the vehicle; Controlling the target vehicle to accelerate by using the target acceleration control curve, so that the target vehicle accelerates to a first target vehicle speed; The target throttle operation force enables the target vehicle to maintain a constant speed according to the first target vehicle speed within a preset time period.

5. The method according to claim 1, characterized in that: Determining the brake balance temperature of the vehicle according to the brake temperature data includes: According to the brake temperature data, a plurality of maximum temperature values ​​of the brake system in the vehicle during a plurality of the preset driving tasks are obtained; A temperature average is calculated according to the plurality of highest temperature values, and the temperature average is determined as a brake balance temperature of the vehicle.

6. The method according to any one of claims 1 to 5, characterized in that: The vehicle is equipped with an external control device and an external measurement device, and before acquiring the control parameters collected during the process of controlling the vehicle to perform the preset driving task, the method further includes: The external control device and the external measuring device are debugged; wherein the external control device is used to control the vehicle to travel, and the external measuring device includes a device for measuring the brake temperature data of the brake system.

7. The method according to claim 6, characterized in that After debugging the external control device and the external measurement device, the method further includes: confirming an initial temperature of a brake system in the vehicle before driving; When the initial temperature exceeds a temperature threshold, the braking system in the vehicle is cooled.

8. The method according to any one of claims 1 to 5, characterized in that: Also includes: It is determined whether the brake system in the vehicle has abnormal wear according to the brake balance temperature.

9. A processing device based on vehicle brake balance temperature, characterized in that: The device comprises: A control parameter acquisition module is used to acquire control parameters collected during the process of controlling the vehicle to perform a preset driving task; A driving task execution module, used to control the vehicle to execute the preset driving task multiple times according to the control parameters, and obtain the brake temperature data collected during the multiple executions of the preset driving task; The brake balance temperature acquisition module is used to determine the brake balance temperature of the vehicle according to the brake temperature data; wherein the brake balance temperature is the temperature value at which the brake system in the vehicle reaches a temperature stable state.

10. An electronic device, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the processing method based on the vehicle brake balance temperature as claimed in any one of claims 1 to 8 is implemented.

11. A readable storage medium, characterized in that: The readable storage medium stores a computer program, and when the computer program is executed by a processor, the processing method based on the vehicle brake balance temperature as claimed in any one of claims 1 to 8 is implemented.

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